“Every single one of them came up to me when no one was looking and said ‘I can’t do this’, all six of them,” Elliott said ahead of the Brisbane premiere last night.

“There was a crossline ­moment, and that was the night before, and I said ‘right, everyone has a problem with this; let’s just lay our cards on the table’. I said ‘we’re not shooting a sex scene, we are shooting a piece of comedy’.

“That was the only way to get it across the line because I realised it was growing in everyone’s heads into hardcore porn with creepy glasses on.”

Keddie said none of the cast had realised the others were nervous about the scene, in which they comically fail to pull it off, sparking a feud between the three families.

“I was just ‘oh my god, I’m a mother, I’m 43. I can’t be taking my clothes off’,” she said. “When we found out that we were all actually petrified, it was fine. I thought ‘I’m doing this; I’m going to get those legs out’.”

Meet the Hall family from Swinging Safari 0:08

Guy Pearce and Kylie Minogue run the Hall family in Swinging Safari which was filmed on the Gold Coast.